Entries by Utah Geological Survey

POTD September 18, 2013: House Range, Millard County, Utah

House Range, Millard County, Utah. Photographer: Michael Vanden Berg The Notch Peak quartz monzonite (foreground) was magma during Jurassic times and intruded into Cambrian limestone and dolomite hundreds of millions of years after the Cambrian rock was deposited as sediment in tropical seas.  

Video: Flash flooding in Natural Bridges

sltrib.com A series of videos shows the muddy violence that took over slickrock country when flash floods hit Natural Bridges National Monument this weekend. Filmed on Saturday and posted to Youtube by user asloss7, the videos show rivers raging through the usually-peaceful Armstrong and Tuwa canyons. WATCH IT HERE    

POTD September 17, 2013: Silver Island Mountains, Tooele County, Utah

Silver Island Mountains, Tooele County, Utah Photographer: Ken Krahulec Limestone has been enriched with silver and lead from  mineral-rich fluids driven by underlying plutons in the Silver Island Mountains, Tooele County. A pluton is a body of magma that cools and crystallizes deep  within Earth’s crust, and is typically granitic in composition. Utah’s wealth of […]

POTD September 16, 2013: Granite Peak, Beaver County, Utah

Granite Peak, Beaver County, Utah Photographer: Tyler Knudsen Spectacular granite crags loom high above Ranch Canyon in the Mineral Mountains. An immense aggregation of smaller intrusions, the 18 million year- old  (Miocene-aged) Mineral Mountains batholith (large body of intrusive igneous rock) is the largest exposed batholith in Utah.

POTD September 13, 2013: Zion National Park, Washington County, Utah

Zion National Park, Washington County, Utah Photographer: Tyler Knudsen Utah showcases a multitude of canyons as varied as its high mountains and dry deserts. Ranging from V- and U-shaped valleys at the edge of mountains to deep and narrow slot canyons in the south, the shapes result from types of erosion and factors such as […]

62nd Annual Meeting of the Rocky Mountain Section of the AAPG, Sept 22-24, 2013

Check out these upcoming events. Roving the Red Planet: A Field Geologist Explores Gale Crater Speaker: Dr. Rebecca Williams, Planetary Science Institute Date: September 24, 2013 Night at the new Natural History Museum of Utah Join us for a private party at this new, extraordinary museum. The night will include food and beverages, entertainment, private […]

Video: HUGE Flash Flood, Southern Utah September 11, 2013

video courtesy of David Rankin After 4 consecutive days of heavy rain, another day of large flash floods strikes southern Utah. Inches of rain have fallen with more in the forecast for the next few days. The 2013 southwest monsoon season has been insane.    

Video: Flash Flood Footage / Erosion Shots Utah Monsoon Sept 9th 2013

video courtesy of David Rankin Shot on September 9th. We have had subsequent floods one after another in south central Utah for over 3 days now. This was some footage from flooding on the 9th. The water undercuts the banks and causes them to collapse, sometimes with very little warning. Its quite the sight in […]